As fas as I know Michael Lynch's most definitive direct refutation of the Hubbert model came in his paper

The New Pessimism about Petroleum Resources:
Debunking the Hubbert Model (and Hubbert Modelers)
(warning: pdf file)

The paper is not new as I read it sometime last year.

Does anyone know if Lynch has an active web site?  His EnergySEER, Strategic Energy & Economic Research, Inc. consultancy web site seems to be dormant.

Also see Lynch's June 6th, 2003 presentation

COPING WITH OIL PRICE VOLATILITY: Welcome to the Roller Coaster (warning: pdf file)

In particular, see the last two slides. The first of these is titled "If pessimists are right" and the last is titled "If I'm right."

There are several other papers & presentations you might want to peruse.  They are all here: http://www.energyseer.com/Presentations.html

Thanks for all the help.